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发明名称
Elektronenrohrvorrichtung
摘要
申请公布号
DE824082(C)
申请公布日期
1951.12.10
申请号
DE1949T000096
申请日期
1949.10.29
申请人
TELEFONAKTIEBOLAGET LM ERICSSON
发明人
BACKMARK NILS ERIK GUSTAV
分类号
H01J21/18;H01J31/06
主分类号
H01J21/18
代理机构
代理人
主权项
地址
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